Paper-feeding mechanism.



SWIFT; JR. PAJEBk FEEDING MEGHNIS M. PPLITIQN FILED HOV. 18, 1910.

3 SHEETS-SHEET 2.

Eaented Jan. 26, w15.

G. W. SWIFT. JR. PER. FEEDING MEOHANSM.

APPLIGTON FILED NOV. 18. 1010.

FIG-

Application fried November 3.5, i910.

To aZZ whom t may concern:

Be it known that I, Grenen YV. Si'ir'r, Jr., of Bordentovvn, in the State of. Jersey, have invented a certain nenv and useful improvement in Paper-Feeding Mechanism, whereof the following is a specification, reference being had to the accompanying' drawings.

My invention relates to means for feeding cut sheets of paper or other *fabric to a printing machine, so that the forward edge of each. sheet shall be presented in' pro )er rectangular relation to the type forni.

My improvement is particularly applicable to printing machines wherein one of the members of the printing coupie is rotary and carriesl stops against which the for'svard edge of each sheet is presented. Grdinarily in machines of said class such stops are carried in rigid relation with the rotary member, and the paper is fed ror- Ward faster than the peripheral speed of said rotary member so as to presenteach sheet of paper against said stopsin proper time. Such dierence in the rate of progression of the sheetsv in the machine before and after they encounter said stops of course necessitates a complex differential operation of the feeding and printing mechanism. r

"It is an object of my invention to avpoi the necessity for such diierential operation,

.by ,providing paper feeding mechanism wherein the paper may be progressed ai. the same rate both before and after it 'encounters the stops, and, ashereinafter described my invention incldes the provision of stops which are automatically 'relatively' oscillatory with respect to the rotary member which carries them; such member being an impression cylinder which 1s opposed. to

the type or printing cylinder in the printing machine. The construction and arrangement set forth 1s such that said stops are automatically rocked backward with respect to the direction of rotation of said imy pression cylinder and trayei of the paper, so as to encounterthe forward edge oi `each sheet and buckle 1t backward sufficiently to 1nsure that its forward edge shall be pre- Specification of Letters Iatent.

Serial 15o.

cllatory grippers, whereby the forward enge of each sheet is gripped and held in'VL tue proper position upon the impression cyi'nder, determined* by said stops, While being printed.

.As hereinafter described, my. invention inciudes two 'forms of such mechanism; irst, a form wherein the stops and grippers though independently oscillatory are carried by a single frame arranged to oscillate in bearings in the cylinder; said stops being carried on one rock shaft in'irigid relation ivithsaid frame, and said grippers being carried on another rock shaft, independently osciiiatory in said frame, said shafts being rocked by respectively digerent canas; and, second, a form wherein the shafts carrying stops and grippers are supported independently of each other, and' associated with aatomaticaliy operative os lare independently operated by respective in the drawings partly in section, showing a convenient ein bodiment of my invention; wherein the stops and grippers being in inoperative position, about to engage a sheet of paper to register-'and grip the latter, are carried by a single qoseilhitory frame. Fig. H is fiers of the impression cylinder shown in Fig. i, but 'ith said stops and grippers engaging the sheet or" paper. Fig. Hi is view siiniiar to Fig. but showingthe stops and grippers shifted to release the sheet Aof paper previously engaged. Fic. iiV is an end View, partly in section, showing a modified form of my invent-ion,

wherein the shafts carrying the stops and f grippers are supported independently o each other. if is a right hand side View or the i ession cylinder in the position shown g. H, in conjunction with other parts oi said mechanism.

ieferring to the forro. oitmy invention shown in Figs, H and H; the feed rolls and 2 are arrangedto continuously progress sheets of paper J at a uniform rate of speed, being the periphersd speed of rotation of the printing; couple includingV the srinting cylinder 5 and the impression cylinder 6. printingpyhnder 7 may also be arranged to cooperate `with said impres# ellel' with the axis of seid cylinder; e

v greenee .to turn said shafts; springs respectively encircling said shafts and connecting the same with 'said cylinder, whereby said shafts are maintained in coperative relation with. said cams; a pair' of feed rolls; :md5 ineens operatively connecting said cylinder and rolls; whereby, said rolls are arranged to progress sheet toward said impression cylinder at Athe peripheral speed of theiatter, said stops are turned backward with respect to the direction of progression of said sheet and rotation of saidvcylinder, to encounter the forward edge of seid sheet, buckle it` backward sufficiently to insure that it shaii4 be presented in elinemen't againstv seid sto s, anda said grippers engage said alined e ge of said sheet a einst/seid cylinder. i

2. iinpnper ceding mechanism, the combination with e rotary cylinder; of e stop shaft journeled in seid cylinder having e plurality of stop levers rigidly secured thereon in spaced relation intermediate of the lengtho' said cylinder, arranged to pro- `ject radi-ilyl beyond the periphery of seid cylinder in slinement with each other per`- v plurelity of oscillatory bearing arms having shaft bearings in alinement with each other parallel with the axis ci? seid cylinder; e

gripper shaft journaled in said arms; n plnv rality of gripper levers rigidlyy secured on said gripper-shaft in spaced relation, ,inter-- mediate oi: thelengthzof said cylinder; nor-L` mally stationary cams; lever arms -upon said shafts respectively having rollers respec tively adapted to coperntewith said cams to turn said shafts; springs whereby. said shafts are maintained in. coperntive rele tion with said cams; a pair of -feed rolls;

and, means-o eratively connecting seid cylinder and rol s; whereby, said rolls sire urto insure that it-shali be presented in alinement against seid stops, and, seid grippers engage said alined edge of sa'id sheet.

ln'testir'nony whereof il have ,hereunto signed my name et, Bordentown, New Jer- 'Seys .this fteenth day ofNovember, 19in LGEORGE W. 'SWFR Je.;

i/Vitnesses:

^ Joeri E. Heem v ,HAROLD B. WELLS,g

said sheet und' rotetien of 'i 

